Ordered as H2.4X12.8, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 12.8 mm (0.504 in), a cross section of 2.4 mm (0.094 in), and an outside diameter of 17.6 mm (0.69 in). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, strong abrasion and tear resistance. Expect good resistance to greases and lubricants, petroleum-based oils, and hydraulic fluids. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or strong acids are present.
Typical settings include construction equipment, fluid power, and automotive.
Reference part number H2.4X12.8 when ordering; the item is sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Description 2.4MM CS X 12.8MM ID BLACK BUNA 70D
Actual Outside Diameter 17.6 mm (0.69 inch)
Actual Cross Section 2.4 mm (0.094 inch)
Actual Inside Diameter 12.8 mm (0.504 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity